Proportional material feeding means



Sept. 10, 1929. H. L. MERRICK PROPORTIONAL MATERIAL FEEDING MEANSOriginal Filed Aug. 13, 1924 9 Sheets-Sheet ATTO RN EY Sept. 10, 1929.H. 1.. MERRICK PROPORTIONAL MATERIAL FEEDING MEANS Original Filed Aug.13. 1924 9 Sheets-Sheet 2 INVENTOR Sept. 10, 1929. H. MERRICKPROPORTIONAL MATERIAL FEEDING MEANS 9 Sheets-Sheet 3 Original Filed Aug.13, 1924 INV ENTOR HLJVernck Sept. 10, 1929. H. L. MERRICK PROPORTIONALMATERIAL FEEDING MEANS Original Filed Aug. 13, 1924 9 Sheets-Sheet 4 E L.M err/0X WW? Sept. 10, 1929. H. L. MERRICK PROPORTIONAL MATERIALFEEDING MEANS Original Filed Aug. 13, 1924 9 Sheets-Sheet 5 INVENTORjilJlMfirrrb$ ATTORN EY Sept. 10, 1929. H. L. MERRICK PROPORTIONALMATERIAL FEEDING MEANS Original Filed Aug. 15, 1924 9 Sheets-Sheet 6 ELMarrz ck ATTO HN EY Sept. 10, 1929. H. 1.. MERRICK PROPORTIONAL MATERIALFEEDING MEANS Original Filed Aug. 15, 1924 9 Sheets-Sheet '7 lllllll ossINVENTOR HL,Mrr/cl ATTORNEY Sept. 10, 1929. H. L. MERRICK PROPORTIONALMATERIAL FEEDING MEANS Original Filed Aug. 13, 1924 9 Sheets-Sheet 8fill/Merrick 3%6 TTORNEY Sept. 10, 1929. H. L. MERRICK PROPORTIONALMATERIAL FEEDING MEANS Original Filed Aug. 13, 1924 9 Sheets-Sheet 9lllllllllllmlflrlh Ii?Illllllll'l lll!!!lFlilllIllllllllllllIHHH!" gun:l

INVENTOR HL.Merr/c/ 1% W ATTO RFEY Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

Original application filed Augunt 13, 1924, Serial No. 731,711. Dividedand this application filed September 2, 1927.

This invention relates to means for feeding material in predeterminedquantities, as by measure or weight, for use in feeding aggregates orcomponent parts of a composition of matter or association of parts, suchas the feeding of aggregates in cement making to a point or place wherethey are to be subjected to treatment to be reduced to a pulverizedstate, the present application being for subjects-matter of inventiondivided out from my co-pending application Serial #731,711, and it isthe primary object of the invention to provide improved means for thispurpose which is adapted to feed variable predetermined quantities ofmaterial at a constant rate or intermittently at predeterminedintervals.

It is the main object of the invention to provide means for feedingmaterials from different sources of supply to a common place of use andthe delivery of said materials in predetermined variable proportionalquantities one relative to the other with means to control the deliveryof one uantity of mate rial by the delivery of a pre etermined quantityof another material. a

A further object of the invention relates to the provision in materialcarrying conveyors of means operable to control the quantity of materialdelivered by one conveyor in predetermined proportion to the quantity ofmaterial delivered by another conveyor.

It is a further object of the invention to provide material feedingmeans including a pair of conveyors and weghing mechanisms to determinethe loads transported by the conveyors, with means to determine the loadtransported by one conveyor by the rate of speed of travel of theconveyor and the load transported thereby, and said meansbeing operativewhen a predetermined quantity of material has been transported over theweighmg mechanism to set another conveyor in opera tion, and thequantity of material transported by said latter conveyor beingcontrolled by .the load thereon by the weighing mechanism associatedtherewith, the quantity of material delivered by said latter conveyorbeing in predetermined proportion to the quantity of materal deliveredby the first conveyor.

Serial No. 217,072.

Other objects and advantages will hereinafter appear.

In carrying out the invention I provide a conveyor, such as an endlessbelt, to transport material delivered thereto from a suitable source,such as a hopper having an outlet arranged in superposed relationthereto, the material discharged from the hopper being regulated by anadjustable closure or gate to vary the area of the hopper outlet,and theadjustment of such closure being effected automatlcally by and inaccordance with the load or quantity of material transported by theconveyor through a weighing beam arranged with means to support a ortionof the conveyor, and the deflection o the Weighing beam controllingmeans for positioning the closure for the hopper outlet to regulate thearea of the hopper outlet.

To feed one material from a source of supply to the place of use inpredetermined proportion to the feeding of another material from asource of supply to the place of use a second conveyor is provided arraned with weighing mechanism to suspend an support a portion of theconveyor therefrom, said conveyor preferably being driven at a constantrate of speed and the weight of the transported load determined byintegrating means operative by the rate of speed of the conveyor and theload transported thereby, means being provided and set in operation whena predetermined quantity of material has been transported by theconveyor to set means in operation to actuate the other conveyormechanism, and said means being operative to stop said conveyormechanism after a predetermined length of travel of the conveyor.

. mined proportional quantity to the quantity of material delivered bythe first apparatus.

Figure 2 is a front elevation of weighing mechanism arranged to suspendand support a portion of one of the conveyors shownin Figure 1 andhaving combined therewith ntegrating means for determining the quantityof material transported by the conveyor by the rate of travel of theconveyor and the load carried thereby; and

Figure 3 is adiagrammatic view of an electric circuit means controlledby the integrating means of one feeding means to control the actuationof a time switch mechanism and the actuating of another feeding means,and the delivery thereby of successive quantities 1 of material inpredetermined ratio to the delivery of material by the first feedingmeans.

Figure 4 is a perspective view looking at the side and from the front ofthe means for regulating the delivery of materialto one conveyor to feedvariable predetermined loads,

only a portion of the conveyor means being.

shown.

Figure 5 is a plan view of the feedmg means shown in Figure 4.

Figure 6 is a side elevation of the mechanism shown in Figure 5 with thedriving means for the conveyor removed.

Figure 7 is a perspective view of the feeding means shown in Figure 4looking at the side and rear.

Figure 8 is a cross sectional View taken substantially on the line 88 ofFigure 11 looking in the direction of the arrows.

- Figure 9 is a perspective view of the gearing shown in Figure 8 foradjusting the counterpoise relative to a weighing beam of the weighingmechanism and for adjusting the closure for the outlet of a hopper fordelivering material to the conveyor.

Figure 10 is a perspective view looking at the rear and side opposite tothat shown in Figure 7 with the conveyor and the hopper for deliveringmaterial to the conveyor removed.

Figure 11 is a side elevation of the mechanism shown in Figure 4 andshowing in addition thereto the hopper for delivering the material tothe conveyor and showing the manner of supporting a portion of theconveyor from a weighing beam.

Figure 12 is a perspective view of a weighing lever or beam from whichto support a portion of the material carrying conveyor and showing insection counter-poise weight adjustably mounted on the beam foradjusting the same to counterbalance variable predetermined loadscarried by the conveyor.

Figure 13 is a cross sectional view taken substantially on the line 1313of Figure 12 looking in the direction of the arrows.

Figure 14 is an end elevation looking at the left of Figure 5 andshowing the conveyor in section.

Figure 15 is a perspective view of change speed gearing for driving theconveyor at different speeds.

Figure 16 is a perspective view to show the manner of suspending aportion of the conveyor from the weighing beam shown in Figure 12. I

Figure 17 is a side elevation, partly in section, of the change speedgearing shown in Figure 15 to show the manner of meshing different gearsto drive the conveyor at different speeds.

Figure 18 is a side elevation of a friction driven drum forming a partof means to adjust the closure from the outlet of the hopper from whichmaterial is delivered to the conveyor shown in Figure 11, the same beingshown partly in section to show the mounting thereof on a shaft topermit of longitudinal movement of the drum while participating in therotative movement of the shaft.

Figure 19 is a cross sectional view taken substantially on the line19-19 of Figure 18 looking in the direction of the arrow.

Figure 20 is a dissembled view, partly in section, of the right hand endof the drum shown in Figure 18 to show the means and manner of mountingthe drum upon its support and rotating shaft.

Figure 21 is an end elevation, partly broken away, to show the drivingmeans for the drum carrying shaft shown in Figure 15 and to ac t-uate alimit switch.

Figure 22 is a sectional view in side elevation of the driving meansshown in Figure 21 looking at the right thereof and showing the drumsupporting shaft.

Figure 23 is an end elevation, partly in section, of differentialdriving gearing forming a part of the gearing shown in Figure 9.

Figure 24 is a cross sectional View taken substantially on the line24-24 of Figure 23 looking in the direction of the arrow.

Figure 25 is an end elevation of a time switch used in connection withthe feeding means with a portion of the enclosing housing thereforremoved.

Figure 26 is a side elevation of the limit switch shown in Figure 25looking at the left of said figure with the enclosing housing thereforin section.

In carrying out the invention a feeding mechanism as shown in Figures 4to 26, inclusive, is provided embodying a material handling way orconveyor comprising an endless belt B passing around drums 27, 27'journaled in bearings 28, 28' mounted on sills 29, to travel in thedirection of the arrow, driving means, such as an electric motor M(Figure 14) being operatively connected with the drum 27 The drumbearings 28 are fixed while the bearings 28' are mounted for adjustmentof the drum 27 toward and away from drum 27. The bearings 28 are urgedin a direction away from the drum 27 by a counterweight 30 suspendedfrom a cable 31 of the conveyor to prevent the possibility of.

introducing inaccuracies in the operation of the mechanism due tovariations in the load transported by the conveyor and consequentpulling strain upon the conveyor. The upper conveyor stretch is alsosupported by rollers 38 with a portion of the conveyor intermediate apair of said rollers suspended by a roller 39 carried by a pair of links40 pivotally suspended from lever arms 41 rigid with a rocker bar 42pivotally supported upon standards 43 (Figures 4, 5, 6 and 16) fixedupon a shelf 43' superposed to the conveyor. The arms 41 extend inparallel relation to and in a direction opposite to that in which theconveyor travels. The rocker bar 42, arms 41, links 40 and roller 39form a part of means to counterbalance the load upon the conveyor.

The material is delivered to the conveyor from a hopper H having anoutlet above the conveyor with guide boards 45 (Figures 5, 6 and 11)extending forwardly from said outlet within the lateral edges thereof toprevent material from spilling from the sides of the conveyor as thematerial is delivered from the hopper. An adjustable gate 46 regulatesthe area of the hopper outlet and discharge of material from the hopper.

To handle and feed a predetermined quantity of material by the conveyor,and to vary said quantity at will, the gate is automatically adjusted tovary the area of the hopper outlet and regulate the discharge ofmaterial from the hopper to handle a predetermined uniform quantity ofmaterial by the conveyor per unit of conveyor length for a given unit oftime with a constant speed of travel of the conveyor and the loadcarried by the conveyor. For this purpose there is pro vided a lever 47,herein termed a Weighing beam, fulcrumed at 48 upon the superstructure44 connected at the shorter end to the rocker bar 42 by a link 49connected to a lever arm-50 rigid with the rocker bar 42 and extendingparallel to the arm 41 thereby suspending a portion of the loadtherefrom through the conveyo" supporting roller 39 suspended from therocker arms 41 by the links 40. The one end of the weighing beam may bearranged with a compensating weight support 50'. To counterbalance aload of predetermined weight upon the conveyor counterpoise weight 51 isadjustably mounted upon the beam, in the form of a carriage supported bysaid beam.

supported upon the beam by rollers 52, the v beam being of U-shape incross section with the edges of the opposite legs serving as tracks forthe carriage rollers (Figure 12). To prevent undue vibration of the beamas it 1s brou ht to equilibrium a dash pot 53 is provlded t e movablemember of which is connected at 54 to the beam, (Figures'4, 6, 10 and11). To prevent undue deflection of the weighing beam by an overload orunderload on the conveyor auxiliary counterpoise weight is providednormally free of the beam and adapted to be applied to or picked up bythe beam, comprising a pair of counter weighted levers 54, 54" pivotallysupported at 55, the counterweight being soarranged as to normallyassume a position below the center of gravity, (Figure 11), said leverscarrying counter-weighted levers 56, 56. A red 57 suspended from theweighing beam is arranged with a pair of hooks 58, 58,the hook 58 beingadapted to pick. up and apply the supplemental counterpoise with thelever 56 to the beam and through said lever upon further deflection ofthe beam apply the auxiliary counterpolse weight lever 54' to the beamwhen the beam is deflected downward or to underload position, while thebook 58 is adapted to pick up and apply the supplemental counterpoiseweight lever 56 to the beam and through said lever apply the auxiliarycounterpoise weight lever 54 to the beam when the beam is deflectedupward or to overload position. It will be obvious that as the beam isbrought to equilibrium it will be relleved of the Weight of saidauxiliary and supplemental counterpoise weight. The posltion of thecounterpoise weight 51 upon the weighing beam is in accordance with therequired or determined quantity of material to be handled or fed by theconveyor to counterbalance such load, and the quantity of material to befed by the conveyor may be variable and changed at will by theadjustment of said counterpoise upon the beam.

To maintain the load transported by the conveyor at a constantpredetermined value to counterbalance the weight of the counter poiseupon the beam, the position of which counterpoise weight upon the beamis in accordance with the weight of such predetermined load, means areprovided to adjust the gate 46 for the hopper outlet to vary the areathereof to increase or decrease the discharge of material from thehopper to the conveyor by a variation in the load transported by theconveyor and the moving of the weighing beam out of equilibrium by anunderload or overload upon the portion of the conveyor This meanscomprises a rack 60 fixed to the gate 46 to extend in a verticaldirection and meshing with a pinion 61 fixed to a shaft 62 ofdifi'erential gearing carried in a housing or casing C (Figures 23 and24) fixed upon the framework ing with a pinion 65 fixed to a shaft 66journaled coaxially with the shaft 62 in the hub of a head 67 rotatably'supported in the easing in concentric relation to said shaft, said headcarrying an internal gear 68 with which the pinions 64, 64 also mesh forthe purpose of allowing a hand wheel to simultaneously adiust the gateof the hopper outlet and the counterpoise weight on the scale beam asfully described hereinafter. A gear 69 fixed to the shaft 65 meshes witha rack 70 fixed at opposite ends to a pair of heads 71, 71 connected inspaced relation to a connecting member 72 (Figure 18), said heads andcon necting member constituting a carriage for a drum 7 3 supported atopposite ends in the carriage heads to have rotative movement. Eachcarriage head rotatably carries flanged rollers 74 whereby the carriagewith the drum is mounted upon rails 75 carried by standards 76 (Figure8) to have to and fro longitudinal movement which is transmitted to thegate fgr adjusting the gearing.

longitudinal movement of the drum it is mounted on a shaft 77 ofrectangular shape in cross section journaled at opposite ends instandards 78. This shaft extends through the drum and the drum ismounted concentrically thereon by heads 79 fixed in the ends of the drumand the drum rotatably supported in the carriage heads 71, 71, saidheads carrying antifriction bearings for longitudinal movement of thedrum uponthe shaft, consisting of flanged rollers 80, a pair of saidrollers engaging at opposite sides of the shaft at each end thereof withthe rollers at one end of the drum arranged in angular relation to therollers at the opposite end of the drum. The rollers 80 are mounted inopposite recesses 81 in the heads 79 and retained therein by releasablecaps 82 (Figure 20). The drum is rotated from the motor M by a sprocketchain 83 (Figures 5, 11, 14, 15, 21 and 22) passing around sprocketwheels on a drive shaft 110 and a shaft 84, and a sprocket chain 85passing around a second sprocket wheel on shaft 84 and a sprocket wheel86 on a shaft 87 with a gear 88 on said latter shaft meshing with apinion 89 on thedrum carrying shaft 77.

The adjustment of, the gate 46 for the hopper outlet is eifected throughthe longitudinal movement ofithe drum rack 7 O with the drum meshingwith the gear 69 connected with the gate through the differentialgearing in gear casing C, and longitudinal movement of the drum iseffected by the moving of the weighing beam out of equilibrium by Topermit of rotative and simultaneous an underload or overload on theconveyor and maintained against movement when the beam is in ectuilibrium. This longitudinal movement 0 the drum is effected by a disk90 frictionally contacting with the drum (Figures 4, 5, 6, 8, 11 and14), said disk being mounted in a bifurcation 91 of a yoke shapedcarrier 92 to rotate on a horizontal axis, the disk carrier havingoppositely extending studs 92, 92" (Figures 10 and 11) whereby it ismounted in portions of a bracket 93 overhanging and extending below thedrum. The disk is maintained in contact by gravity with and frictionallydriven from the drum. When the disk is traveling at right angles to thedrum it will hold the drum against longitudlnal movement, and whentravelling in angular relation to the axis of the drum it will exert athrust upon the drum to move it axially, the direction of movement ofthe drum being in accordance with the angular relation of the disk tothe drum. To effect changes in the direction of travel of the disk bythe deflection of the beam it is connected with the beam by a link 94pivotally connected a-t one end with the stud 92 of the disk carryingyoke and with a rigid arm 95 extending downward from and in line withthe pivotal support of the beam. Should there be an overload upon theconveyor thereby defleeting the weighing beam upward the friction diskwill be adjusted to travel in a directlon in angular relation to theaxis of the drum to exert an axial thrust upon and move the drum axiallyin the direction of the arrow indicated in Figures 4,5 and 9, andthrough the gear connection adjust the gate to reduce the area of thehopper outlet and a consequent reduction in the discharge of materialfrom the hopper to the conveyor, such adjustment of the gate beingcontinued until the load on the conveyor brings the weighing beam toequilibrium. lVhen the load on the conveyor is under a predeterminedweight, determined by the position of the counterpoise weight upon thebeam, and the beam is deflected downward the friction disk will beadjusted to travel in a direction in angular relation to the drum tocause it to move in a direction opposite to that indicated by the arrow,adjusting the gate for the hopper outlet to increase the area of theoutlet and an increased discharge of the material from the hopper to theconveyor, which is continued until the beam is brought into equilibriumby the load upon the conveyor. From the foregoing it will be obviousthat a load of a predetermined weight will be constantly fed anddelivered by the conveyor, and the weight of the load and the quantityof material fed by the conveyor will be in accordance with the positionof the counterpoise weight upon the weighingbeam.

Means are provided to simultaneously adjust the counterpoise weight uponthe beam and the gate for the hopper outlet to vary scale beam 119' isof rectangular shape in the area of said outlet in proportionaterelation to the position of the counterpoise u on the beam, comprising ahand wheel 96 4 igures 4 to 9) fixed to a shaft 97, operativelyconnected to a counterpoise adjuster comprising a vertical arm 99carrying flanged rollers 100 engaging upon a slideway 101 to havemovement in a direction longitudinally of the weighing beam, the arm 99being connected to the countcrpoise by a rod 101'. Movement of thecounterpoise adjuster along the slideway 101 is effected through therotation of the hand wheel 96 by a rack 102 connected at the ends to thearm 99 and a head 99' mounted by rollers 100' upon a slideway 101", therack being connected to the hand wheel by a gear 102, fixed to shaft 97,a gear 103 in mesh with the rack and intermediate pinions 104, 105meshing with the gears 103 and 102' respectively. As the hand wheel isrotated to the right the eounterpoise will be adjusted to the right onthe beam, and when rotated in reverse direction it is adjusted in theopposite direction. To simultaneously adjust the gate for the hopperoutlet there is provided a gear 106 on a shaft 97 which meshes with agear 107 fixed to the hub of the pinion carrier 67 in casing C (Figure24), whereby the rotation of the shaft 62 carrying pinion 61 in meshwith the gate rack is effected.

To efi'ect variations in the rate of speed of travel and in the loadhandled by the conveyor, variable speed driving means is provided,(Figures 15 and 16) comprising a worm' 108 on the shaft of motor Mmeshing with a worm wheel 109 on the shaft 110. A gear 111 and pinion112 are mounted on shaft 110 to rotate therewith and have movement alongthe shaft in unison and adapted to be meshed with a pinion 113 and agear 114, respectively, on a shaft 115. When pinion 112 is in mesh withgear 114 gear 111 will be out-of mesh with pinion 113, and vice versa.The shaft 115 is connected to the conveyor drum 27 by a worm 116 meshingwith a worm wheel 117 on a shaft 118 having a flexible coupling with thedrum shaft. The reducing gearing may be enclosed in a housing 119 asshown in Figure 5.

The weight of the material fed by the conveyor per unit of length oftravel of the conveyor is indicated on a scale beam 119 relative towhich an indicator 120 is moved simultaneously with the adjustment ofthe poise weight 51, this indicator being mounted upon the head 99' toparticipate in themovement imparted thereto through the operation of thehand wheel 96. It will be obvious that when the conveyor is travelingatone rate of speed the quantity of material fed will be different thanwhen the conveyor is travelin at another rate of speed, and a multipleca ibrated or graduated scale beam is therefore provided. For thispurpose the cross section and pivotally supported at opposite ends inbrackets 121, 122 fixed to the framework, the bracket 122 also beingarranged to slidably support a rack 123 with which a pinion 124 carriedby the scale beam meshes. While calibrations may be arranged on the foursides of the scale beam, where only two changes in the rate of speed oftravel of the conveyor may be effected, as in the present instance onlytwo of the sides are calibrated. The change speed gears 111, 112 areadjusted by a hand lever 125 to the support of which an arm 126 is fixedconnected by a link 127 to an arm 128 of a rock shaft 129 (Figure 4) towhich a shifter 130 (Figure 15) for the change speed gears 111, 112 isconnected by a rod 131 connected to a second arm 132 on said rock shaft.To effect simultaneous adjustment of the scale beam 119' the rack 123 isconnected by a link v 133 to the arm 126.

To hold the conveyor supporting roller 39 from movement in a directionlongitudinally of the conveyoras the conveyor travels thereover with thepossibility of exerting strains upon the weighin beam other than thoseeffected by the loa upon the conveyor a pair of restraining links 134are provided connected to the links 40 and a fixed part of the framework(Figure 16). To prevent side swaying of said roller 39 the links 40 areextended beyond their connection with the roller and connected by a rod135, connected intermediate its ends to one end of a rod 136 the 0posite end of which rod is connected to a xed part of the framework.

To feed material in predetermined quantities by the conveyor Bproportional to an- 9 other quantity of material fed by another conveyormeans are provided to intermittently actuate said conveyor B, which iseffected by opening the circuit of the drivingmotor M to stop theconveyor after a predetermined length of travel thereof. In

igure 1 there is diagrammatically illustrated feeding mechanism for thispurpose wherein the one feeding means hereinbefore described isrepresented in a general way at D to deliver material to a place of use,indicated as a bin E, and in feeding material to constitute one of theaggregates in cement making leading to a disintegrating apparatus. (Notshown.) To feed another material or materials to the bin E a secondtravelingconveyor is provided,-designated in a general way by F and asof the belt type.- The source of supply from which the material isdelivered by said conveyor is illustrated as railway cars G from whichthe material is delivered to a hopper I having an outlet arranged todeliver the material to the conveyor F.

The intermittent actuation of the conveyor mechanism D is controlled bythe quantity of material fed by the conveyor F whereby to feed materialby said conveyor D proportional to the quantity of materialfed by theconveyor, F. For this purpose means are provided to determine thequantity of material fed by the conveyor F, which means is operative bythe rate of speed of travel of the conveyor and the load transportedthereby. This means com rises a mechanical integrator of the typeisclosed in Patent No. 954,870 granted tome April 12th, 1910, andillustrated in a conventional manner in Figure 2 and represented by J inFigure 1. As the construction and o ration of this integrator mechanismis ully illustrated and described in in said patent detailedillustration and description 18 not deemed to be nec; essary. Thisintegrator includes a traveling element in the form of a belt, driven atthe same rate of speed as the conveyor, and 'a rotary carrier in theform of a disk 137 carrying a series of integrating wheels upon itsperiphery to successively frictionally engage the traveling element andthe mounting for said carrier being arranged to adapt the carrier toturn in a plane parallel to the friction surface with mechanism toregister the revolutions of the disk or carrier for the integratingwheels. When the disk has made a complete revolution a predeterminedquantity of material will have been fed by the conveyor. The feedinmeans D is adapted to feed a predetermine quantity of material which isproportional to the quantity of material fed by the feedin means F, andthe feeding of material by the feeding means D is controlled by thequantity of material fed by the feeding means F. For this purpose a timeswitch is provided to control the actuation of a switch, designated in ageneral way at T, for connecting the motor M into and cutting it out ofcircuit with a source of electricity, the time switch being connectedin.

circuit with electric circuit closing means forming a part of theintegrator of the feeding means F. The circuit for closing the circuitof the time switch is diagrammatically illustrated in Figure 3.

The time switch mechanism comprises a series of three disks 7, g and kof insulator material, such as fibre, and two pairs of contact heads138, 138' and 139, 139', the heads 138, 138' being electricallyconnected and the heads 139, 139 also being electrically connected. Eachof said heads with the exception of head 139 is undercut or recessed atdiametrically opposite points (indicated at h in Figure 3) to provideeach of said heads with what is in eiiect diametrically opposite lyarranged contact terminals; the head 139' has more than one-half of itscircumference reduced to arrange said head in efi'ect with a singlecontact terminal portion i. The contact head carrying disks are mountedon a shaft 8 rotatably supported in the walls of an enclosing housingfor said switch mounted upon the supporting shelf 44 for the weightingbeam. Contact terminals 140-, 140 and 141, 141' are pivotally carried bybracket 0 fixed to and insulated from a bar 143 and yieldingly urged bysprings d in a direction to contact with the head terminals h to haverubbing contact therewith as clearly shown in Figure 25. The contactcarrying shaft 8 is driven from the shaft 87 which is geared to anddrives the drum rotating shaft 77 b a pinion 144 on the shaft 87 meshingwit a gear 145 on a shaft 146 and having a pinion 147 fixed thereonmeshingwith a gear 148 on shaft 8. The integrator disk 137 has aterminal contact 149 connected in circuit with a source of currentsupply, such as a batte represented in a conventional manner at? andwith which contact one of a air of terminal contacts 151, 152 arrangediametrically opposite the axis of the integrator disk are adapted tocontact. The contact 152 is electrically connected to the contact maker141 by conductor j, while the contact 151 is electrically connectedthrough conductor k to a contact maker 153 pivotally carried by abracket a fixed on and insulated from a bar 143 and urged to position inpredetermined relation toward the contact head 139' by a spring cl, saidcontact 153 being adapted to coerate with the terminal 11 of contacthead 139 to close the circuit. The contact 141 is connected to one sideof the source of current supply I) by conductor 1, the contact 149 ofthe integrator wheel being connected to the other side of the battery bya conductor m with an actuating coil 154 for a circuit closer 155interposed therein. The circuit closer 155' is interposed in a conductor156 connected to contact 140' and conductor m having a coil 157 of anelectromagnetically operated circuit closer 157' interposed therein,said circuit closer being connected in the circuit of the motor M with asource of electric current supply. The contact 140 is elec tricallyconnected through conductor 1 with the source of current supply b, shownin the present instance for illustrative purposes through the contact141 to conductor n. The circuit of the time switch is adapted to beclosed upon each one-half revolution of the integrator wheel 137.Assuming that five hundred pounds is to be fed by the feeding means D toeach two thousand pounds fed by the feeding means F. Also assuming thatcontact is made between the contact head 139 and contact 141 as twothousand pounds is transported over the integrator by the feeding meansF when contact head 149 of the integrator wheel will be brought intocontact with contact 152 closing the circuit for the time switch throughthe conductor], m and contact 141 which is in contact with contact head139, the

connected with contact head 139', the closing of the circuit energizingcoil 154 which actuates circuit closer 155 through contact 140 and theconnection of the latter with the battery b by conductor '11, Z and 156thereby actuating the circuit closing means 157, 157' and connecting themotor M in circuit with a source of electricity which motor operates thefeeder means B, and as the limit switch is actuated from said motor theswitch will be actuated until the contact heads 138', 138, and 139' arepositioned with the contacts 140', 141 and 141' engaging the undercutportions in said contact heads and out of contact therewith opening thecircuit through coil 154 when circuit closer 155' will move to circuitopening position, shown in full lines. In order that the circuitmay notbe broken with a consequent stopping of the motor M when the contact 149of the integrating wheel moves out of contact with contact 152 andbefore the limit switch has completed a onehalf revolution, a holdingcircuit is provided which is in the nature of a shunt circuit connectedin circuit with the conductors l. m. and comprising a conductor 0connected with the conductor m at one treminal of coil 154 and with thecontact 140 which co-operates with the contact head 138,-which, asstated, is electrically connected with the contact head 138', theconductor 0 being connected through said head and the contact 140 ashereinbefore described with the conductor Z. The conductor 0 has acircuit closer 155 connected therein which is connected with thecircuitccloser 155' to be actuated in unison therewith by the coil 154.This holding circuit will be broken simultaneously with the opening ofthe circuit through the contact heads 140, 141 and 141 by contact 140coming opposite to an undercut portion of the contact head 138.

Should the integrating mechanism stop with the contact 149 in contactwith contact 152 there will be no repetition of the feeder mechanism Bsince upon the completion of a one-half revolution of the time switchcontact heads contact will be broken through conductor 141 with theterminal contact 2' and and contact head 138'.

Upon the feeding or delivery of a successive two thousand pounds by thefeeding means F the integrator wheel 137 will be advanced a furtherone-half revolution bringing the contact 149 into contact with contact151 connected by conductor is with contact 153 when the circuit will beestablished through contact 13 of contact head 139' and contact 153 andthe time switch in circuit with the conductor m when the circuit of themotor M is again es-- er mechanism B even after the circuit of thedriving motor M is broken to bring said contact termmali into contactwith the contact The travel of the conveyor of the feeder D is so timedwith relation to the rotation of the time switch, and the delivery ofthe material through the hopper H to the conveyor B is so regulated bythe positioning of the closure ate for the hopper outlet by the loadupon t 1e conveyor B so that five hundred pounds of material will be fedduring the interval of actuation of said feeding means. The travel ofthe conveyor of feeding means F is continuous and during the feeding ofmaterial by feeder D materialfed by the feeding means F will actuate theintegrator and after two thousand pounds has been fed the feeding meansD will again be set in operation in a manner as above set forth.

\Vhile I have illustrated and described one embodiment of carrying outthe invention it is to be understood that the construction andarrangement of parts may be variously modified, and that portions of theinvention may be used without others and come Within the scope of theinvention.

Having thus described my invention I claim:

1. The combination of a pair of traveling eonveyers, means to delivermaterial to said conveyers to be transported thereby, and meanscontrolled by the transporting of a predetermined quantity of materialby one conveyer to control the actuation and delivery of material by theother conveyer.

2. The combination of a plurality of traveling material carryingeonveyers, means to deliver material to said conveyers from differentsources ot'supply to be transported to a common place of use, means tointermittently actuate and control the delivery of material to oneconveyer to deliver successively a predetermined quantity of material bysaid conveyer, and means to control said actuating means for the oneconveyer operative from another conveyer upon the delivery of apredetermined quantity of material by said latter conveyer.

3. The combination of a pair of traveling material carrying eonveyers,and means operative to deliver material by one of said conveyers inpredetermined proportion to the material delivered b the other conveyercontrolled by the quantity of material transported by said latterconveyer.

4. In material feeding means, a material carrying conveyer traveling ata constant speed, a second traveling material carrying conveyer,actuating means for said eonveyers, and means operative upon thetransporting of successive predetermined quantities of material by thefirst conveyer to render the actuating means for the second conveyeractive and said means operative upon a p e etermined travel of thesecond conveyer to render the actuating means therefor inactive todeliver material by one conveyer in'predetermined proportional uantitiesto the material delivered by the ot er conveyer;

5. In material feeding means, a pairof conveyor mechanisms, meansintermittently operative to impart successive predetermined lengths oftravel to one conveyor to deliver successive predetermined quantities ofmaterial thereby, and means controlled by the delivery of apredetermined quantity of material by the other conveyor operative torender the operatin means for the first conveyor active and the deliveryof material by the first conveyor in predetermined proportion to thedelivery of material b the second conveyor.

6. In material fee ing means, a pair of conveyers, one of whichconveyers travels at a constant speed, means operative to intermittentlyactuate the other conveyer, and means operative when a predeterminedload has been transported by the conveyer traveling at a constant speedrate to set the other conveyer in operation.

7. In material feeding means, a pair of conveyers one of which conveyerstravels at a constant speed, operative means to intermittent ly actuatethe other conveyer, means operative when a predetermined load has beentransported by the conveyer traveling at constant speed to start theactuating means for the other conveyer in operation, and means operativethrough the weight of the material transported by the latter conveyer tocontrol the delivery of material by said conveyer during .the periods oftravel thereof.

8. In material feeding means, a conveyer traveling at a constant speed,a second conveyer, intermittently operative means to actuate the secondconveyer and impart a predetermined length of travel thereto, meansoperative from the first conveyer when a predetermined quantity ofmaterial has been transported thereby to render the actuatmg means forthe second conveyer active, and means operative from the actuating meansfor and controlled by the load transported by said second conveyer tomaintain the quantity of material delivered thereby in predeterminedproportion relative to the quantity of material transported by the firstconveyer.

9. In material feeding means, a pair of conveyers one of which conveyerstravels at a constant speed, intermittently operative means to actuatethe other conveyer, means operative by the rate of speed of travel andthe load transported by the first conveyer to render the actuating meansfor the intermittently operative conveyer active, and means actuatedfromsaid actuating means to render the actuating means inactive when apredetermined unit of travel has been imparted to said conveyer.

10. In material feeding means, a conveyer traveling at a constant speed,a second conveyer, means to deliver material to said conveyer, anelectric motor having a driving connection with the second conveyer incircuit. with a source of electricity having circuit opening and closingmeans interposed in the circuit normally urged to circuit openingposition, actuating means for said circuit opening and closing means, atime switch connected in an open local circuit with said actuating meansfor the circuit opening and closing means, and means actuated from thevfirst conveyer operative when a predetermined uantity of material hasbeen transported y said conveyer to close the circuit of the drivingmotor for the second conveyer ghrc'lough the time switch for the purposespeci- 11. In material feeding means, a. material carrying way travelingat a constant speed, a second material carrying way, means to delivermaterial to said ways, an electric motor for driving said second wayhaving circuit opening and closing means normally urged to circuitopening position connected in the circuit thereof with a source ofelectricity, actuating means for said circuit closing and opening means,a time switch operative from the motor connected in a normally openlocal circuit with said actuating means for the first way operative whena predetermined quantity of material has been transported by said way toclose the circuit of the time switch and render the actuating means 1for the circuit opening and closing means in the motor circuit operativeto close said circuit, said time switch being operative upon apredetermined unitof travel of the second way to render the actuatingmeans for the circuit opening and closing means in the motor circuitinactive, and means to regulate the delivery of material to said secondway from the means to deliver material thereto and deliver material bysaid way in predetermined proportion to the quantity of materialdelivered by the first way.

12. In material feeding means, a conveyer traveling at a constant speed,a hopper having an outlet arranged to deliver material to said conveyer,a second conveyer, a second hopper having an outlet arranged to delivermaterial to said second conveyer and having an adjustable gate to varythe hopper outlet, integrating means associated with the first conveyeroperative by the rate of speed of travel and the quantity of materialtransported by said conveyer to determine the quantity of materialdelivered by said conveyer, an electricmotorhavingadrivingconnectionwiththesec- 0nd conveyer, means including atime switch to normally maintain the motor circuit open, means operativeby the integrating means when a predetermined quantity of material hasbeen transported by the first conveyer to render the time switch activeto close the circuit of the motor, and said switch being operative toopen the motor circuit after a predetermined length of travel of thesecond conveyer, and means operative by the load transported by thesecond conveyer to adjust the gate for the hopper outlet to regulate thedischarge of material to the conveyer, and the delivery of material bysaid conveyer constant.

13. In material feeding means, a travelin conveyor, a hopper having anoutlet arranged to deliver material from the hopper to the conveyor,weighing mechanism suporting a sectionof the conveyor, means controlledfrom the weighing mechanism to regulate the delivery of material fromthe hopper to the conveyor proportional to the rate of travel of theconveyor, and said conveyor being normally inactive, driving meanshaving an operative connection with said conveyor, a second conveyor,means operative upon the transporting of a predetermined quantity ofmaterial by said latter conveyor to render the first conveyor active,and means automatically operative after a predetermined length of travelof the first conveyor to render said conveyor inactive.

Si ed at Passaic, in the county of Passaic, and tate of New Jersey, thisthirty-first day of August, A. D. 1927.

HERBERT L. MERRICK.

